ESTABLISHMENT OF A MARINE BIOLOGICAL STATION AT GRANTON. 475 
tion with the quarry may be shut off, and water pumped out of the low- 
level reservoir formed by the pits. The delivery pipe from the pump 
branches after some distance, one branch going to the high-level, the 
other to the low-level reservoir. The latter is used when it is required 
to pump water direct from the quarry to the low-level reservoir. The 
water is delivered into the deep aquarium tanks by four fine-glass jets. 
The highest shallow tank is supplied from an ordinary stop-cock, but 
_ there is also a pipe running along the wall at the back of the shallow 
_ tanks, fitted with a number of jets from which small vessels for isolation 
and experiment may be supplied. 
‘ The steam yacht Medusa, of fourteen tons burthen, which was built 
for the Station at its institution in April last, and is specially fitted for 
dredging and sounding, still forms the principal sea-going equipment. 
_ Dnuring the present year the services of a small lugger-rigged fishing 
_ boat have also been available. Investigations have been carried on at 
the Station in the three departments of Zoology, Botany, and Physics. 
Up till the end of last June inquiries into the fauna and flora of the 
Firth of Forth were carried on regularly, by means of dredging and tow- 
netting and shore-collecting. During the six months following June 
1884, Mr. J. R. Henderson, M.B., devoted the greater part of his time 
and attention to the speciegraphical and faunological work of the Sta- 
tion, and made a specially complete examination of the Crustacea; he 
obtained and identified fifty species hitherto unrecorded as occurring in 
the Firth of Forth. A paper on these species was published by him in 
the ‘Proc. Roy. Phys. Soc. Edin.,’ 1884-5. Dredging and collecting 
were continued in the Firth of Forth up till the end of June, and the re- 
sults are recorded in the note-books of the Station. Mr. Cunningham’s 
time has been much occupied in working at the embryology of teleostean 
fishes, and in attempts to elucidate the reproduction of Myxine ; his work 
in faunology has been chiefly confined to the Chetopoda. The em- 
bryology of some pelagic eggs and that of the herring, together with the 
_ habit of the herring in the neighbourhood of the Firth of Forth, were 
investigated last year. In the first half of the present year a study was 
made of the development of the cod, haddock, whiting, and gurnard. 
Since then Myxine has principally received attention. 
At the end of June last a summer branch of the Station was esta- 
_ blished at Millport. The Ark and the yacht were taken thither from 
_ Granton, through the Forth and Clyde Canal. The Ark was at first 
moored in Millport Bay, and afterwards drawn up on shore, and during 
the months of July and August dredging was carried on in the Medusa 
by Mr. Murray and Mr. J. R. Henderson, and zoological studies were 
pursued in the Ark by these and several other naturalists. Mr. Hender- 
son was engaged during the whole time in the examination of the 
Crustacea, Echinodermata, and Polyzoa of the Clyde estuary. Mr. David 
Robertson, of Glasgow, availed himself of the resources and arrangements 
provided to pursue his studies of Ostracoda and other minute forms. 
He is preparing a complete systematic account of the Amphipoda of the 
Clyde for the Glasgow Natural History Society. The Rev. A. M. 
Norman spent a fortnight in zoological work at Millport, and Mr. Dendy, 
of Owens College, Manchester, worked for atime at the physiology of 
Comatula. At the beginning of September the yacht was brought back 
to Granton, where she arrived on the 2nd. The Ark has been left at 
